A cooling duct (10) configured to introduce air flow to a cooling target device provided in a helicopter body of a helicopter (1) includes a duct body (11), a front opening (15), an upper opening (16), a hinge (31), and a movable blade (21) The duct body (11) is mountable below a main rotor (2) of the helicopter (1) to be adjacent to the cooling target device. The front opening (15) is formed on a forward side of the helicopter body in the duct body (11). The upper opening (16) is formed on an upper side of the helicopter body in the duct body (11). The hinge (31) is disposed in an upper portion of the duct body (11) and includes a pivot shaft (31a) extending in a lateral direction of the helicopter body. The movable blade (21) with an end that is pivotally supported by the hinge (31) is provided to be pivotable about the pivot shaft (31a) between a first position (21A) and a second position (21B).
COOLING DUCT
KÜHLKANAL
CONDUIT DE REFROIDISSEMENT
18.11.2020
Patent
Elektronische Ressource
Englisch